{ "gridConnectionList": [ { "powerStationNo": "test34-ls", "elecHouseNum": "FD111", "contractSignDate": "2023-01-01", "connectDate": "2023-01-01", "elecBeginDate": "2023-01-01", "installedCapacity":11111, "contractTerm":5 } ], "materialList": [ { "powerStationNo": "test35-ls", "lineNum": "HH111", "materialName": "物料111", "configNum": 111, "materialNo": "WL111", "materialGroup": "物料组枚举111", "brand": "品牌111", "power": 600, "model":"型号111" } ], "leaseholdList": [ { "roofNo":"FW001", "powerStationNo": "test35-ls", "stationName": "电站111", "stationPosition": "河北", "stationCapacity": 600, "wattValue": 200, "totalPrice": 2000 } ], "orderNo": "LSS2023010500014", "serialNum": "LS2023-test02-ls" } json转java对象

可以使用Java中的Jackson库来实现Json转Java对象的操作。具体实现步骤如下：

1. 定义Java对象对应的类（如下所示）：

public class GridConnection {
    private String powerStationNo;
    private String elecHouseNum;
    private String contractSignDate;
    private String connectDate;
    private String elecBeginDate;
    private int installedCapacity;
    private int contractTerm;

    // 省略getter和setter方法
}

public class Material {
    private String powerStationNo;
    private String lineNum;
    private String materialName;
    private int configNum;
    private String materialNo;
    private String materialGroup;
    private String brand;
    private int power;
    private String model;

    // 省略getter和setter方法
}

public class Leasehold {
    private String roofNo;
    private String powerStationNo;
    private String stationName;
    private String stationPosition;
    private int stationCapacity;
    private int wattValue;
    private int totalPrice;

    // 省略getter和setter方法
}

public class Order {
    private List<GridConnection> gridConnectionList;
    private List<Material> materialList;
    private List<Leasehold> leaseholdList;
    private String orderNo;
    private String serialNum;

    // 省略getter和setter方法
}

2. 使用Jackson库的ObjectMapper类进行转换操作，示例代码如下：

ObjectMapper mapper = new ObjectMapper();
Order order = mapper.readValue(jsonStr, Order.class);

其中，jsonStr为待转换的JSON字符串，Order.class为目标Java对象的类。通过调用ObjectMapper类的readValue()方法，将JSON字符串转换为Java对象。

注意：在使用Jackson库进行Json转Java对象的操作时，需要保证Java类的成员变量名称与JSON字符串中的键名一致，否则无法进行转换。